![]() Many different kinds of gates used on a dam Gauss The unit of magnetic induction in the cgs (centimeter-gram. Gate In hydrologic terms, a device in which a leaf or member is moved across the waterway from an external position to control or stop flow. Gas Laws The thermodynamic laws pertaining to perfect gases, including Boyle's law, Charles' law, Dalton's law and the equation of state. The winds blow through low passes where major river valleys issue onto the seaways when strong east-west pressure gradients exist between the coast and the inland areas, with low pressure over the ocean. Gap Winds Strong winds channeled through gaps in the Pacific coastal ranges, blowing out into the Pacific Ocean or into the waterways of the Inside Passage. Generally, emitted during radioactive decay of a substance. Gamma Ray A type of electromagnetic radiation with a very short wavelength and high energy level. Gamma A unit of magnetic field intensity equal to 1 x 10.0 -5 Gauss also equal to 1 nanotelsa (nT). Gallery In hydrologic terms, a passageway within the body of a dam or abutment. Gale Watch A watch for an increased risk of a gale force wind event for sustained surface winds, or frequent gusts, of 34 knots (39 mph) to 47 knots (54 mph), but its occurrence, location,and/or timing is still uncertain. Gale Warning A warning of sustained surface winds, or frequent gusts, in the range of 34 knots (39 mph) to 47 knots (54 mph) inclusive, either predicted or occurring, and not directly associated with a tropical cyclone. Gale An extratropical low or an area of sustained surface winds of 34 (39 mph) to 47 knots (54 mph). Gaging Station In hydrologic terms, a particular site on a watercourse where systematic observations of stage/ and or flow are measured. However, if the elevation of the gage datum relative to the national datum (North American Vertical Datum of 1988 or National Geodetic Vertical Datum of 1929) has been determined, then the gage readings can be converted to elevations above the national datum by adding the elevation of the gage datum to the gage reading. ![]() Gage datum is a local datum that is maintained indepenÂdently of any national geodetic datum. Because the gage datum is not an actual physical object, the datum is usually defined by specifying the elevations of permanent reference marks such as bridge abutments and survey monuments, and the gage is set to agree with the reference marks. This surface usually is located slightly below the lowest point of the stream bottom such that the gage height is usually slightly greater than the maximum depth of water. Gage Datum A horizontal surface used as a zero point for measurement of stage or gage height. (3) The operation, including both field and office work, of measuring theĭischarge of a stream of water in a waterway. When these characteristics are undergoing change. ![]() (2) The act or operation of registering or measuring the magnitude or position of a thing Precipitation, the depth of snowfall, etc. G/KG Grams per Kilogram Gage In hydrologic terms,ġ) A device for indicating the magnitude or position of a thing in specific units, when such magnitude or position undergoes change,įor example: The elevation of a water surface, the velocity of flowing water, the pressure of water, the amount or intensity of G Gusts- A rapid fluctuation of wind speed with variations of 10 knots or more between peaks and lulls. Press enter or select the go button to submit request
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